CVE-2020-10109: canonical ubuntu_linux HTTP Request/Response Smuggling

Vulnerability summary

CVE-2020-10109 is a critical (CVSS 9.8) HTTP Request/Response Smuggling vulnerability in canonical ubuntu_linux. EPSS estimates a 3.29% chance of exploitation in the next 30 days, higher than 88.3% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 12-03-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

In Twisted Web through 19.10.0, there was an HTTP request splitting vulnerability. When presented with a content-length and a chunked encoding header, the content-length took precedence and the remainder of the request body was interpreted as a pipelined request.

• CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.